1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "libscf_impl.h" 28 29 #include <assert.h> 30 #include <dlfcn.h> 31 #include <libintl.h> 32 #include <pthread.h> 33 #include <stdarg.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <sys/machelf.h> 38 #include <thread.h> 39 40 #include <ucontext.h> 41 42 extern int ndebug; 43 44 static struct scf_error_info { 45 scf_error_t ei_code; 46 const char *ei_desc; 47 } scf_errors[] = { 48 {SCF_ERROR_NONE, "no error"}, 49 {SCF_ERROR_NOT_BOUND, "handle not bound"}, 50 {SCF_ERROR_NOT_SET, "cannot use unset argument"}, 51 {SCF_ERROR_NOT_FOUND, "entity not found"}, 52 {SCF_ERROR_TYPE_MISMATCH, "type does not match value"}, 53 {SCF_ERROR_IN_USE, "cannot modify while in-use"}, 54 {SCF_ERROR_CONNECTION_BROKEN, "connection to repository broken"}, 55 {SCF_ERROR_INVALID_ARGUMENT, "invalid argument"}, 56 {SCF_ERROR_NO_MEMORY, "no memory available"}, 57 {SCF_ERROR_CONSTRAINT_VIOLATED, "required constraint not met"}, 58 {SCF_ERROR_EXISTS, "object already exists"}, 59 {SCF_ERROR_NO_SERVER, "repository server unavailable"}, 60 {SCF_ERROR_NO_RESOURCES, "server has insufficient resources"}, 61 {SCF_ERROR_PERMISSION_DENIED, "insufficient privileges for action"}, 62 {SCF_ERROR_BACKEND_ACCESS, "backend refused access"}, 63 {SCF_ERROR_BACKEND_READONLY, "backend is read-only"}, 64 {SCF_ERROR_HANDLE_MISMATCH, "mismatched SCF handles"}, 65 {SCF_ERROR_HANDLE_DESTROYED, "object bound to destroyed handle"}, 66 {SCF_ERROR_VERSION_MISMATCH, "incompatible SCF version"}, 67 {SCF_ERROR_DELETED, "object has been deleted"}, 68 {SCF_ERROR_TEMPLATE_INVALID, "template data is invalid"}, 69 70 {SCF_ERROR_CALLBACK_FAILED, "user callback function failed"}, 71 72 {SCF_ERROR_INTERNAL, "internal error"} 73 }; 74 #define SCF_NUM_ERRORS (sizeof (scf_errors) / sizeof (*scf_errors)) 75 76 /* a SWAG just in case things get out of sync, we can notice */ 77 #define LOOKS_VALID(e) \ 78 ((e) >= scf_errors[0].ei_code && \ 79 (e) < scf_errors[SCF_NUM_ERRORS - 1].ei_code + 10) 80 81 static scf_error_t _scf_fallback_error = SCF_ERROR_NONE; 82 83 #if defined(PTHREAD_ONCE_KEY_NP) 84 85 static pthread_key_t scf_error_key = PTHREAD_ONCE_KEY_NP; 86 87 int 88 scf_setup_error(void) 89 { 90 return (pthread_key_create_once_np(&scf_error_key, NULL) == 0); 91 } 92 93 #else /* PTHREAD_ONCE_KEY_NP */ 94 95 /* 96 * This old code is here to enable the building of a native version 97 * of libscf.so when the build machine has not yet been upgraded 98 * to a version of libc that provides pthread_key_create_once_np(). 99 * It should be deleted when solaris_nevada ships. 100 * This code is not MT-safe in a relaxed memory model. 101 */ 102 103 static pthread_key_t scf_error_key = 0; 104 105 int 106 scf_setup_error(void) 107 { 108 static pthread_mutex_t scf_key_lock = PTHREAD_MUTEX_INITIALIZER; 109 static volatile int scf_error_key_setup = 0; 110 111 if (scf_error_key_setup == 0) { 112 (void) pthread_mutex_lock(&scf_key_lock); 113 if (scf_error_key_setup == 0) { 114 if (pthread_key_create(&scf_error_key, NULL) == 0) 115 scf_error_key_setup = 1; 116 } 117 (void) pthread_mutex_unlock(&scf_key_lock); 118 } 119 120 return (scf_error_key_setup == 1); 121 } 122 123 #endif /* PTHREAD_ONCE_KEY_NP */ 124 125 int 126 scf_set_error(scf_error_t code) 127 { 128 assert(LOOKS_VALID(code)); 129 130 if (scf_setup_error()) 131 (void) pthread_setspecific(scf_error_key, (void *)code); 132 else 133 _scf_fallback_error = code; 134 return (-1); 135 } 136 137 scf_error_t 138 scf_error(void) 139 { 140 scf_error_t ret; 141 142 ret = (scf_error_t)pthread_getspecific(scf_error_key); 143 if (ret == 0) 144 return (_scf_fallback_error); 145 assert(LOOKS_VALID(ret)); 146 return (ret); 147 } 148 149 const char * 150 scf_strerror(scf_error_t code) 151 { 152 struct scf_error_info *cur, *end; 153 154 cur = scf_errors; 155 end = cur + SCF_NUM_ERRORS; 156 157 for (; cur < end; cur++) 158 if (code == cur->ei_code) 159 return (dgettext(TEXT_DOMAIN, cur->ei_desc)); 160 161 return (dgettext(TEXT_DOMAIN, "unknown error")); 162 } 163 164 const char * 165 scf_get_msg(scf_msg_t msg) 166 { 167 switch (msg) { 168 case SCF_MSG_ARGTOOLONG: 169 return (dgettext(TEXT_DOMAIN, 170 "Argument '%s' is too long, ignoring\n")); 171 172 case SCF_MSG_PATTERN_NOINSTANCE: 173 return (dgettext(TEXT_DOMAIN, 174 "Pattern '%s' doesn't match any instances\n")); 175 176 case SCF_MSG_PATTERN_NOINSTSVC: 177 return (dgettext(TEXT_DOMAIN, 178 "Pattern '%s' doesn't match any instances or services\n")); 179 180 case SCF_MSG_PATTERN_NOSERVICE: 181 return (dgettext(TEXT_DOMAIN, 182 "Pattern '%s' doesn't match any services\n")); 183 184 case SCF_MSG_PATTERN_NOENTITY: 185 return (dgettext(TEXT_DOMAIN, 186 "Pattern '%s' doesn't match any entities\n")); 187 188 case SCF_MSG_PATTERN_MULTIMATCH: 189 return (dgettext(TEXT_DOMAIN, 190 "Pattern '%s' matches multiple instances:\n")); 191 192 case SCF_MSG_PATTERN_POSSIBLE: 193 return (dgettext(TEXT_DOMAIN, " %s\n")); 194 195 case SCF_MSG_PATTERN_LEGACY: 196 return (dgettext(TEXT_DOMAIN, 197 "Operation not supported for legacy service '%s'\n")); 198 199 default: 200 abort(); 201 /* NOTREACHED */ 202 } 203 204 } 205